网上找了很多资料，，不管用，贴上解决步伐

build.gradle里面

dependencies { implementation fileTree(dir: ‘libs‘, include: [‘*.jar‘]) //换失appcompat，否则webview会瓦解 implementation ‘com.android.support:appcompat-v7:28.0.0‘ //implementation ‘androidx.appcompat:appcompat:1.1.0‘ }

rk3288开发板，webview瓦解问题措置惩罚惩罚